This graph illustrates the existing collaborations on published research. Each vertex (circle) represents a faculty member, and each edge (line) represents a case of a coauthored publication involving the two faculty members that it links.

Thus there is a line between GP and WL because Geoff Pullum and Bill Ladusaw are co-authors of Phonetic Symbol Guide, and WL is linked to JM and SC because there is a joint paper by Chung, Ladusaw, and McCloskey (1995, Natural Language Semantics 3: 239-282), and so on.